US PATENT SUBCLASS 433 / 92
.~.~ And suction pump or material separator


Current as of: June, 1999
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433 /   HD   DENTISTRY

25  DF  APPARATUS {20}
91  DF  .~ Having suction orifice {5}
92.~.~ And suction pump or material separator


DEFINITION

Classification: 433/92

And suction pump or material separator:

(under subclass 91) Apparatus including either (a) means for creating subatomospheric pressure at the nozzle, or (b) means for recovering and retaining the removed material from the air current.